139k views
4 votes
Which is an exponential decay function f (x)=3/4 (7/4)x f (x)=2/3 (4/5)-x. F (x)=3/2 (8/7)-x f (x)=1/3 (9/2)x

User Tim Kryger
by
7.1k points

2 Answers

7 votes
If all the x's are exponents, then 3/2 (8/7)^-x is the only one that decays as x gets bigger.  That's because the base is greater than 1 and the x is negative.
User Granger
by
7.3k points
5 votes
to answer your question the answer is c)3/2(8/7)^x
User Harsh Pamnani
by
7.9k points